Home / 3,968.68-5,945.28-2,119.15

Finding the Fourth Proportional to 3,968.68, 5,945.28 and 2,119.15

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Solution

The fourth proportional to 3,968.68, 5,945.28 and 2,119.15 is: 3,174.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.68 : 5,945.28 = 2,119.15 : x
  2. Step 2: Convert to fraction form
    3,968.68/5,945.28 = 2,119.15/x
  3. Step 3: Cross multiply
    3,968.68x = 5,945.28 × 2,119.15
  4. Step 4: Simplify right side
    3,968.68x = 12,598,940.11
  5. Step 5: Solve for x
    x = 12,598,940.11/3,968.68
  6. Step 6: Final answer
    x = 3,174.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.